Brazilian Body Language

Negation

No

Shake your hand and arm from side to side, with index finger extended to indicate "no." You can also shake your head sideways at the same time. To scold a child, the finger is pointed and shaken at the child.

Don't Know

Hold your hands in front of your body with your wrists loose and brush your fingertips across each other. This can also mean I don't care, depending on the situation.